DocumentCode :
2116321
Title :
An Efficient Method for Designing Low-Delay Nonuniform Oversampled M-channel Filterbanks
Author :
Bregovic, Robert ; Dumitrescu, Bogdan ; Saramaki, Tapio
Author_Institution :
Inst. of Signal Process., Tampere Univ. of Technol., Tampere
fYear :
2007
fDate :
27-29 Sept. 2007
Firstpage :
58
Lastpage :
62
Abstract :
This paper proposes an efficient method for designing oversampled nearly perfect reconstruction (NPR) M-channel nonuniform filterbanks (NUFBs) with an arbitrary delay. NUFBs considered in this paper are generated by joining two or more uniform sections with a transition filter (TF) in between every two adjacent sections. The uniform sections are generated by using the generalized DFT (GDFT) modulation of one prototype filter per section and are designed by using semidefinite programming and/or second-order cone programming. The complex-valued TFs are designed by utilizing the frequency-sampling technique (FST) for designing FIR filters. The performance of the proposed design method is shown by means of an example.
Keywords :
FIR filters; channel bank filters; discrete Fourier transforms; modulation; FIR filters; arbitrary delay; frequency-sampling technique; generalized DFT modulation; oversampled M-channel filterbanks; second-order cone programming; semidefinite programming; transition filter; Adaptive filters; Delay; Design methodology; Electronic mail; Finite impulse response filter; Frequency; Modulation coding; Prototypes; Signal design; Signal processing;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Image and Signal Processing and Analysis, 2007. ISPA 2007. 5th International Symposium on
Conference_Location :
Istanbul
ISSN :
1845-5921
Print_ISBN :
978-953-184-116-0
Type :
conf
DOI :
10.1109/ISPA.2007.4383664
Filename :
4383664
Link To Document :
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